In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(Ⅵ)in aqueous solution

作     者：Rongrong Zhang Daohao Li Jin Sun Yuqian Cui Yuanyuan Sun Rongrong Zhang;Daohao Li;Jin Sun;Yuqian Cui;Yuanyuan Sun

作者机构：School of Environmental Science and EngineeringCollaborative Innovation Center for Marine Biomass FiberMaterials and Textiles of Shandong ProvinceQingdao UniversityQingdao 266071China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2020年第14卷第4期

页      面：147-158页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This research was funded by the National Natural Science Foundation of China(Grant Nos.51672143 and 51808303) Natural Science Foundation of Shandong Province(Nos.ZR2019BEE027 and ZR2018BEM002) Applied Basic Research of Qingdao City(Special Youth Project)(Nos.19-6-2-74-cg and 19-6-2-83-cg) Outstanding Youth of Natural Science in Shandong Province(No.JQ201713),and Taishan Scholars Program 

主　　题：Carrageenan FeS Double-helix structure Hexavalent chromium 

摘      要：Iron sulfide(FeS)nanoparticles(termed FSNs)have attracted much attention for the removal of pollutants due to their high efficiency and low cost,and because they are environmentally ***,issues of agglomeration,transformation,and the loss of active components limit their ***,this study investigates in situ synthesized FeS/carbon fibers with an Fecarrageenan biomass as a precursor and nontoxic sulfur source to ascertain the removal efficiency of the *** enrichment of sulfate groups as well as the double-helix structure in i-carrageenan-Fe could effectively avoid the aggregation and loss of FSNs in practical *** obtained FeS/carbon fibers were used to control a Cr(Ⅵ)polluted solution,and exhibited a relatively high removal capacity(81.62 mg/g).T he main mechanisms included the reduction of FeS,electrostatic adsorption of carbon fibers,and Cr(Ⅲ)-Fe(Ⅲ)complexation *** pseudo-second-order kinetic model and Langmuir adsorption model both provided a good fit of the reaction process;hence,the removal process was mainly controlled by chemical adsorption,specifically monolayer adsorption on a uniform ***,co-existing anions,column,and regeneration experiments indicated that the FeS/carbon fibers are a promising remediation material for practical application.